464 Coleopterological Notices, V. 



Head relatively much larger ; ventral pygidium of the male larger, 

 very slightly longer than wide ; body smaller and less stout. 



testaceum 

 Basal ridges extremely short, flat and broadly but acutely triangular, sepa- 

 rated by barely one-fourth of the discal width ; smaller species, the 

 male with minute setose tufts near the sides of the second and third 

 ventral segments. 

 Head subequal in size to the prothorax ; intermediate femora greatly 



swollen in the male candidlint 



Head much shorter and narrower than the prothorax ; intermediate femora 



scarcely perceptibly larger in the male niariuicuni 



Elytra with two basal foveae. 



Head smaller ; elytra nearly as long as wide. 

 Cephalic foveae large and very widely separated. 



The foveie near the antero-superior margin of the eye ; abdominal 



carinpe strong, one-half as long as the segment foveicolle 



The foveae unusually posterior in position ; abdominal carinse two-thirds 



as long as the segment COStale 



Cephalic foveae very small, nude, separated by one-half the total width ; 

 front parabolic in outline ; abdominal carinse finely triangular, flat, 



scarcely one-third as long as the segment pacificiliu 



Head slightly larger ; elytra very much shorter, transverse, species more 

 minute breTipeiiiie 



The following species which I have not seen are attached provi- 

 sionally to the present genus: — 



Elongate, shining, black, the antennae and legs testaceous. 1.3 mm. Sitka, 



Alaska. Probably a true Actium clavicorne 



Head narrower than the prothorax; elytral striae extending to the middle; 



abdominal carinae very minute. 1.2 mm. Iowa. Probably a true Actium. 



diiriiiii 

 Head transverse, nearly as wide as the prothorax, the foveae pubescent and 



separated by one-half the width ; elytra with two basal foveae, the discal 



stria very short ; base of the tergum not carinate, the segments subequal. 



Iowa? Affinities somewhat doubtful parabolicuill 



Antennae not longer than the head [Brendel]. 1.5 mm. Georgia. Aflinities 



decidedly doubtful globifer 



Head narrower than the prothorax, the latter wider than long ; maxillary 



palpi with the last Joint not larger than the third. 1.4 mm. Virginia. 



Probably not an Actium impuiictatuni 



Costale Brend is also unknown to nie in nature, but its relation- 

 ship \\\i\\ foveicoUe appears to be sufficiently evident. Califorvicum 

 Lee. was described by me under the name pallidum ; the discal stria 

 is too short in the figure (Bull. Cal. Acad. Sci., II, PI. xvi). The 

 species has recently been described also by Mr. Raffray under the 



